diff --git a/Sources/Basics/Triple+Basics.swift b/Sources/Basics/Triple+Basics.swift
index 439c980fc1a..7da68ca29ac 100644
--- a/Sources/Basics/Triple+Basics.swift
+++ b/Sources/Basics/Triple+Basics.swift
@@ -64,13 +64,11 @@ extension Triple {
     /// This is currently meant for Apple platforms only.
     public func tripleString(forPlatformVersion version: String) -> String {
         precondition(isDarwin())
-        // This function did not handle triples with a specific environments and
-        // object formats previously to using SwiftDriver.Triple and still does
-        // not.
         return """
             \(self.archName)-\
             \(self.vendorName)-\
-            \(self.osNameUnversioned)\(version)
+            \(self.osNameUnversioned)\(version)\
+            \(self.environmentName.isEmpty ? "" : "-\(self.environmentName)")
             """
     }
 
diff --git a/Tests/BasicsTests/TripleTests.swift b/Tests/BasicsTests/TripleTests.swift
index bc4ebbf800a..aa392c0c5ee 100644
--- a/Tests/BasicsTests/TripleTests.swift
+++ b/Tests/BasicsTests/TripleTests.swift
@@ -122,6 +122,12 @@ final class TripleTests: XCTestCase {
 
         XCTAssertTriple("mips-apple-darwin19", forPlatformVersion: "", is: "mips-apple-darwin")
         XCTAssertTriple("mips-apple-darwin19", forPlatformVersion: "22", is: "mips-apple-darwin22")
+
+        XCTAssertTriple("arm64-apple-ios-simulator", forPlatformVersion: "", is: "arm64-apple-ios-simulator")
+        XCTAssertTriple("arm64-apple-ios-simulator", forPlatformVersion: "13.0", is: "arm64-apple-ios13.0-simulator")
+
+        XCTAssertTriple("arm64-apple-ios12-simulator", forPlatformVersion: "", is: "arm64-apple-ios-simulator")
+        XCTAssertTriple("arm64-apple-ios12-simulator", forPlatformVersion: "13.0", is: "arm64-apple-ios13.0-simulator")
     }
 
     func testKnownTripleParsing() {